Air-entraining agent increases impermeability of hybrid fiber concrete.引气剂有助于提高混杂纤维混凝土的抗渗性。Foam has a robust and independent foam connection, water absorption in less than 25 %. impermeability.发泡有强韧而独立的发泡连接, 吸水率在25%以内. 具...
The bulb of the eye is important for us.眼球对于我们来说非常重要。The stairwell was lit by a single bulb.楼梯间只有一盏灯照明。A 40 watt bulb would be quite sufficient and would not obtrude...40瓦的灯泡完全够亮了，并且不会晃眼。An incandescent bulb and fiber we...